Window-sash lock.



L. H. BRADSHAW.

WINDOW SASH LOCK.

APPLICATION TILED JUNE 27, 1913.

1,088,399, Patented Feb. 24, 1914 10 yfi g z 7 r 13 is 2 fiE- 12 13 A 5'5 Wz'inweg: 2 H nv ejiior;

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' FlltTlE BA LEWIS H. BRADSHAW, OF SAN FRANCISCO, CALIFORNIA.

WINDOW-SASH LOCK.

To all whom it may concern Be it known that I, LEWIS H. BRADSHAW, acitizen of the United States, residing in the city of San Francisco, inthe county of San Francisco and State of California, have invented a newand useful Improvement in l/Vindow-Sash Locks, of which the following isa specification.

My invention relates to an improvement in Window sash-locks, and has forits object to produce a novel and simple device of the characterindicated which will be adapted to retain or fasten either one or bothwindow sashes at any desired point, and afford a means to securely lockthe sash or sashes as adjusted, either entirely open, partly open orcompletely closed. I attain this object by the mechanism illustrated inthe accompanying drawing in which Figure 1 is a section of the casingcontaining the two bolts, both extended in a locked position and also adiametrical sec tion of bolt socket E. Fig. 2 is a section of the casingcontaining the two bolts in a retracted position. Fig. 3 is a portion offront elevation of easing. Fig. i is a section at line M N in Fig. 1.Fig. 5 is a longitudinal section and a front elevation of socket F forbolt C. Fig. 6 is a front elevation of socket E for bolt B. Fig. 7 is alongitudinal. section of connected rings 1) and b and front elevation ofsaid rings. Fig. 8 is a view of the device applied to a window, showingsashes completely closed.

Similar letters and numbers refer to similar parts throughout theseveral views in the drawing. I

In detail-any invention consists of an L shaped easing A, within whichare slidingly mounted two bolts, B and C, at right angles to each other,adapted to engage bolt-sockets E in the upper window sash and boltsockets F in the window frame, respectively. Bolt B has also a rotarymovement, being provided on its rear portion with longitudinalgear-teeth a to mesh with teeth d extending across flattened rearportion of bolt C and parallel with said teeth a. Rings 5 and b (whichmay be connected as shown in Fig. 7 to facilitate the adjustment of theparts in the manufacture of the device) are made integral parts of theinside of easing A at its rear end as shown in 1 and 2. Coil spring Dencircles toe central portion of bolt B from collar 0 to ring Z) actingas a shoulder. The rear end of bolt B is insert- Specification ofLetters Patent.

Application filed. June 27, 1913.

Patented Feb. 2 1, 1914:.

Serial No. 776,094.

ed through rings 5 and Z) and spring D is kept in place by and betweenring 6 and collar 0. Then the flattened rear end of bolt C is insertedbetween rings Z) and Z) and under bolt B as shown in Figs. 1 and 2 sohat teeth (Z will mesh with t eth a. Handle or knob 2 is made anintegral part of bolt B at its rear end outside of easing A at open ing5. Lug 1 is provided on bolt B near its forward end. It is not essentialhowever that the flattened rear end of bolt C be under bolt B. Thedevice may be constructed so that said flattened rear end of bolt C willengage the top of bolt C, instead of engaging it underneath, teeth (Zmeshing with teeth a in a similar manner. Also ring 6 and the connectionbetween rings 6 and Z) are not essential. Bing Z) alone made an integralpart of easing A, would be suiiicient.

Casing A is provided with openings 3 and 4 through which the forwardends of bolts B and C, respectively, may pass, inner recess 6immediately to the rear of opening 3, and opening 5 through which therear end of bolt B passes when the bolts are retracted. Said opening 3is provided with notch 6. with an elliptical opening 7, with notch 8 andan inner recess 9. Socket F for bolt C, is thimble shaped, taperingslightly inward, and has a circular opening 10 the diameter of which islarger than that of the forward end of bolt C. Both of said sockets Eand F are made as separate members, as distinguished from the holes inthe window sash and frame, respectively, in which the former areinserted. Said holes are made with an ordinary bit and said sockets areinserted and jammed into them so that their outer surfaces will be flushwith the sash and frame respectively. Opening 7 of socket E is madeelliptical and the diameter of circular opening 10 of socket F largerthan that of the forward end of bolt C, for the purpose of providing asuitable play to facilitate the locking of the bolts because of apossible faulty juxtaposition of the Window sashes and window frame.

In applying my sash-lock to a window as shown in Fig. 8 the same isplaced on the top of the lower sash at one side, in a position so thatthe forward end of bolt B will point forward toward the upper sash andthe forward end of bolt 0 will point laterally to ward the window frame.The device is fas- Socket E, for bolt B, is provided I tened to the sashby means of screws through hole 11 and flanges 12 and 13 with whichcasing A is provided. Thus the device will be fastened securely by meansof three screws in three different directions, one from the top downwardand the others from the front forward and right to left respectively.Several bolt sockets E are inserted at desired distances one above theother in the upper sash, while bolt sockets F are inserted in cor-'responding positions on the corresponding side of the window frame,asshown in Fig. 8. The device may be so constructed to be applied toeither side of the window.

In operating my sash-lock, both bolts being in a retracted position asshown in Fig. 2, and bolt B being retained within the casing by means oflug 1 engaging recess 6, it is necessary to turn handle or knob 2 toenable lug l to pass through notch 6, bolt B being actuated by spring D.Bolt 13 will then be forced forward into socket E, lug 1 passing throughnotch S of said socket. Then by turning handle or knob 2 again, teeth awill mesh with teeth (Z, which action will simultaneously project bolt 0to the right from the easing into socket F and cause lug l of bolt B tobe retained within socket E by engaging recess 9. Thus both the upperand lower sashes will be locked.

When it is desired to lock both sashes securely, one or both beingpartly open, the sash-lock may be operated so that bolts B Copies ofthis patent may be obtained for and C will lock in sockets E and F,respectively, at points wherever the upper window sash and window frameare provided with them.

Having thus described my invention what I claim as new and desire tosecure by Letters Patent is:

The combination of a casing having two openings; two bolts, mounted atright an gles to each other and adapted to project through saidopenings; means for transmitting motion from one of said-bolts to theother, one of said bolts actuated by a spring and having both a forwardand rotary movement and the other of said bolts a lateral movement; aninner recess within one of said openings; a lug provided on the forwardend of one of said bolts, adapted to engage said inner recess; abolt-socket in the window sash provided with an elliptical opening andan inner recess; a thimble-shaped boltsocket in the window frame; intowhich boltsockets said bolts may be respectively projected from saidcasing, substantially as described.

In testimony whereof, I have hereunto signed my name to thisspecification in the presence of two subscribing witnesses.

LEWIS H. BRADSHAW.

lVitnesses DUDLEY DAVIS, Ssvnnro NICASTRO.

five cents each, by addressing the Commissioner of Patents. Washington,D. C.

